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EP2064711B1 - Apparatus and method for longitudinal sealing of electrical lines - Google Patents

Apparatus and method for longitudinal sealing of electrical lines Download PDF

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Publication number
EP2064711B1
EP2064711B1 EP07787317A EP07787317A EP2064711B1 EP 2064711 B1 EP2064711 B1 EP 2064711B1 EP 07787317 A EP07787317 A EP 07787317A EP 07787317 A EP07787317 A EP 07787317A EP 2064711 B1 EP2064711 B1 EP 2064711B1
Authority
EP
European Patent Office
Prior art keywords
sealing
line
pressure
compound
negative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07787317A
Other languages
German (de)
French (fr)
Other versions
EP2064711A1 (en
Inventor
Werner Hofmeister
Ulrich Schmatz
Thomas Frahammer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2064711A1 publication Critical patent/EP2064711A1/en
Application granted granted Critical
Publication of EP2064711B1 publication Critical patent/EP2064711B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor

Definitions

  • the invention is based on a device and a method for longitudinal sealing of electrical lines according to the preamble of patent claims 1 and 5, respectively.
  • Such a device and such a method are for example by the DE 103 45 676 A1 known.
  • the present invention makes it possible, when using a suitable sealing compound, to seal electrical lines, in particular stranded lines and cable harnesses, against the penetration of engine oil.
  • the sealing compound is introduced or sucked into the cavities of the conduit by a negative pressure applied from the other side of the conduit.
  • the suction of the sealant is ensured in the line, which can also be checked directly by the temporal pressure curve during the suction process.
  • the risk of wear or clogging as injection needles not.
  • device 1 is used for longitudinal sealing of an electrical line 2 with one or more line fibers 21.
  • the line fibers 21 are, as in Fig. 2 shown, surrounded by an outer wrapper 22, wherein remain between the individual line fibers 21 as well as between the individual line fibers 21 and the outer wrapper 22 cavities 23rd
  • the sealing device 1 comprises a supply reservoir (reservoir) 4 filled with liquid sealant 3 and a vacuum source (vacuum pump) 5 with an adapter connection 6.
  • the pressure prevailing in the adapter connection 6 is detected by a pressure sensor 7, which is connected to a monitoring unit (not shown).
  • the one end 2a of the conduit 2 to be sealed is immersed in the liquid sealant 3.
  • the other end 2b of the line 2 is - sealed by a seal 8 - connected to the adapter connection 6.
  • the sealing compound 3 penetrates into the cavities 23 of the conduit 2, wherein their penetration depth into the conduit 2 is dependent on the process duration and the viscosity of the sealing compound 3.
  • the sealant 3 by a subsequent treatment step, such as a Temperature treatment, post-treated to achieve the full sealing effect.
  • several lines 2 can simultaneously be subjected to negative pressure via the adapter 6 and sealed with the sealing compound 3.
  • the sealing mass supply reservoir 4 may alternatively or additionally to the vacuum source with a lid 10 sealed pressure-tight and connected to a pressure source 11 .
  • the effect of the overpressure (arrow direction 12) for introducing the sealing compound 3 into the line 2 to be sealed also leads in this way.

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  • Processing Of Terminals (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

In a method for longitudinal sealing of electrical conductors that include one or more conductor elements disposed inside an external sheath, and include cavities between the individual conductor elements and between the individual conductor elements and the external sheath, in which the one end, requiring sealing, of the conductor is immersed in a liquid sealing compound, and the other end of the conductor has negative pressure applied to it. A sealing apparatus suitable for carrying out said method encompasses a supply reservoir for the liquid sealing compound into which the one end, requiring sealing, of the conductor is immersed, and a negative-pressure source to which the other end of the conductor is connected.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Vorrichtung und einem Verfahren zur Längsabdichtung von elektrischen Leitungen nach der Gattung des Patentanspruchs 1 bzw. 5.The invention is based on a device and a method for longitudinal sealing of electrical lines according to the preamble of patent claims 1 and 5, respectively.

Eine derartige Vorrichtung und ein derartiges Verfahren sind beispielsweise durch die DE 103 45 676 A1 bekannt geworden.Such a device and such a method are for example by the DE 103 45 676 A1 known.

Das Eindringen von Wasser oder anderen Medien in Fahrzeug-Kabelbäume kann zum Ausfall der angeschlossenen Komponenten und Steuergeräte führen und somit auch zum Ausfall des Fahrzeuges, da flüssige Medien vor allem in Litzenleitungen durch die Hohlräume vorandringen. Daher werden bei entsprechenden Anforderungen, die durch den Verbauort gegeben sind, dicht ausgelegte Stecker verwendet, um einen dichten Kabelbaum zu erhalten. Für elektrische Leitungen, die nicht in einem Stecker enden, z.B. mit Ringkabelschuhen versehene Leitungen, werden häufig von außen Schrumpfschläuche mit Schmelzkleber zur Abdichtung verwendet.The ingress of water or other media in vehicle harnesses can lead to the failure of the connected components and control units and thus also to the failure of the vehicle, since liquid media, especially in stranded wires penetrate through the cavities. Therefore, with appropriate requirements, which are given by the place of installation, tight-fitting plug used to get a tight wiring harness. For electrical cables that do not terminate in a connector, eg cables provided with ring cable lugs, shrink sleeves with hot melt adhesive are often used externally for sealing purposes.

Gerade im Motorraum oder gar bei Verbau von elektrischen Komponenten, wie Einspritzdüsen im Motor eines Kraftfahrzeuges, treten neben Wasser auch noch andere Medien auf, wie z.B. Motoröl. Ein bei den daraus resultierenden Anforderungen beständiger Heißkleber ist nicht erhältlich, so dass hier zu anderen, teuren Lösungen gegriffen werden muss, wie z.B. speziellen Ringkabelschuhen mit Dichtungseinsatz oder Trennstecker.Especially in the engine compartment or even in construction of electrical components, such as injectors in the engine of a motor vehicle, in addition to water also other media occur, such. Engine oil. A resistant to the resulting requirements hot-melt adhesive is not available, so it must be resorted to other, expensive solutions, such as. special ring cable lugs with sealing insert or isolating plug.

Aus der eingangs genannten DE 103 45 676 A1 ist es bekannt, eine flüssige Dichtmasse in Hohlräume einer elektrischen Leitung mittels einer Injektionsnadel einzubringen. Allerdings besteht die Gefahr, dass die Injektionsnadel mit der Zeit verschleißt oder verstopft und ausgewechselt werden muss.From the above DE 103 45 676 A1 It is known to introduce a liquid sealant into cavities of an electrical line by means of an injection needle. However, there is a risk that the injection needle will wear over time or become clogged and replaced.

Offenbarung der ErfindungDisclosure of the invention

Die vorliegende Erfindung ermöglicht es, bei Verwendung einer geeigneten Dichtmasse, elektrische Leitungen, insbesondere Litzenleitungen und Kabelbäume, auch gegen das Eindringen von Motoröl zu versiegeln. Erfindungsgemäß wird die Dichtmasse durch einen von der anderen Seite der Leitung aufgebrachten Unterdruck in die Hohlräume der Leitung eingebracht bzw. eingesaugt. Durch Eintauchen der Einsaugstelle in die Dichtmasse ist das Einsaugen der Dichtmasse in die Leitung sichergestellt, was auch direkt durch den zeitlichen Druckverlauf beim Einsaugprozess überprüft werden kann. Weiterhin besteht beim hier vorgeschlagenen Verfahren die Gefahr des Verschleißes oder des Verstopfens wie bei Injektionsnadeln nicht.The present invention makes it possible, when using a suitable sealing compound, to seal electrical lines, in particular stranded lines and cable harnesses, against the penetration of engine oil. According to the invention, the sealing compound is introduced or sucked into the cavities of the conduit by a negative pressure applied from the other side of the conduit. By immersing the Einsaugstelle in the sealant, the suction of the sealant is ensured in the line, which can also be checked directly by the temporal pressure curve during the suction process. Furthermore, in the method proposed here, the risk of wear or clogging as injection needles not.

Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstands der Erfindung sind der Beschreibung, der Zeichnung und den Ansprüchen entnehmbar.Further advantages and advantageous embodiments of the subject invention are the description, the drawings and claims removed.

Kurze Beschreibung der ZeichnungShort description of the drawing

Ein Ausführungsbeispiel der erfindungsgemäßen Abdichtvorrichtung ist in den Zeichnungen dargestellt und in der nachfolgenden Beschreibung näher erläutert. Die Figuren sind teilweise abgebrochen, schematisch und nicht maßstäblich. Es zeigen:

Fig. 1
die erfindungsgemäße Vorrichtung zur Längsabdichtung von elektrischen Leitungen; und
Fig. 2
den Querschnitt einer abzudichtenden elektrischen Leitung.
An embodiment of the sealing device according to the invention is shown in the drawings and explained in more detail in the following description. The figures are partially broken off, schematically and not to scale. Show it:
Fig. 1
the inventive device for longitudinal sealing of electrical lines; and
Fig. 2
the cross section of an electrical cable to be sealed.

Ausführungsform der ErfindungEmbodiment of the invention

Die in Fig. 1 gezeigte Vorrichtung 1 dient zur Längsabdichtung einer elektrischen Leitung 2 mit einer oder mehreren Leitungsfasern 21. Die Leitungsfasern 21 sind, wie in Fig. 2 gezeigt, von einer Außenumhüllung 22 umgeben, wobei zwischen den einzelnen Leitungsfasern 21 sowie zwischen den einzelnen Leitungsfasern 21 und der Außenumhüllung 22 Hohlräume 23 verbleiben.In the Fig. 1 shown device 1 is used for longitudinal sealing of an electrical line 2 with one or more line fibers 21. The line fibers 21 are, as in Fig. 2 shown, surrounded by an outer wrapper 22, wherein remain between the individual line fibers 21 as well as between the individual line fibers 21 and the outer wrapper 22 cavities 23rd

Die Abdichtvorrichtung 1 umfasst ein mit flüssiger Dichtmasse 3 gefülltes Vorratsreservoir (Vorratsbehälter) 4 und eine Unterdruckquelle (Vakuumpumpe) 5 mit einem Adapteranschluss 6. Der im Adapteranschluss 6 herrschende Druck wird mit einem Drucksensor 7 erfasst, der an eine nicht gezeigte Überwachungseinheit angeschlossen ist.The sealing device 1 comprises a supply reservoir (reservoir) 4 filled with liquid sealant 3 and a vacuum source (vacuum pump) 5 with an adapter connection 6. The pressure prevailing in the adapter connection 6 is detected by a pressure sensor 7, which is connected to a monitoring unit (not shown).

Wie in Fig. 1 gezeigt, wird das zu dichtende eine Ende 2a der Leitung 2 in die flüssige Dichtmasse 3 eingetaucht. Das andere Ende 2b der Leitung 2 wird - mittels einer Dichtung 8 abgedichtet - an den Adapteranschluss 6 angeschlossen. Durch den Unterdruck angezogen (Pfeilrichtung 9) dringt die Dichtmasse 3 in die Hohlräume 23 der Leitung 2 ein, wobei ihre Eindringtiefe in die Leitung 2 von der Prozessdauer sowie der Viskosität der Dichtmasse 3 abhängig ist. Gegebenenfalls wird die Dichtmasse 3 durch einen anschließenden Behandlungsschritt, wie z.B. eine Temperaturbehandlung, nachbehandelt, um die volle Dichtwirkung zu erzielen. Vorteilhaft können hierbei auch mehrere Leitungen 2 gleichzeitig über den Adapter 6 mit Unterdruck beaufschlagt und mit der Dichtmasse 3 abgedichtet werden. Wenn das zu dichtende Ende 2a der Leitung 2, genauer gesagt die Außenumhüllung 22, in die Dichtmasse 3 eingetaucht ist, ist das Einsaugen der Dichtmasse 3 in die Leitung 2 sichergestellt. Dieser Vorgang kann auch direkt durch den mit dem Drucksensor 7 erfassten Druckverlauf beim Einsaugprozess überprüft werden.As in Fig. 1 As shown, the one end 2a of the conduit 2 to be sealed is immersed in the liquid sealant 3. The other end 2b of the line 2 is - sealed by a seal 8 - connected to the adapter connection 6. Attracted by the negative pressure (arrow 9) , the sealing compound 3 penetrates into the cavities 23 of the conduit 2, wherein their penetration depth into the conduit 2 is dependent on the process duration and the viscosity of the sealing compound 3. Optionally, the sealant 3 by a subsequent treatment step, such as a Temperature treatment, post-treated to achieve the full sealing effect. Advantageously, several lines 2 can simultaneously be subjected to negative pressure via the adapter 6 and sealed with the sealing compound 3. When the end 2a to be sealed of the conduit 2, more precisely the outer sheath 22, is immersed in the sealant 3, the suction of the sealant 3 into the conduit 2 is ensured. This process can also be checked directly by the pressure profile detected by the pressure sensor 7 during the suction process.

Wie in Fig. 1 gestrichelt angedeutet, kann das Dichtmassen-Vorratsreservoir 4 alternativ oder zusätzlich zur Unterdruckquelle mit einem Deckel 10 druckdicht abgeschlossen und an eine Überdruckquelle 11 angeschlossen sein. Alternativ bzw. zusätzlich zur Wirkung des Unterdrucks führt so auch die Wirkung des Überdrucks (Pfeilrichtung 12) zum Einbringen der Dichtmasse 3 in die zu dichtende Leitung 2.As in Fig. 1 indicated by dashed lines, the sealing mass supply reservoir 4 may alternatively or additionally to the vacuum source with a lid 10 sealed pressure-tight and connected to a pressure source 11 . As an alternative or in addition to the effect of the negative pressure, the effect of the overpressure (arrow direction 12) for introducing the sealing compound 3 into the line 2 to be sealed also leads in this way.

Claims (8)

  1. Method for the longitudinal sealing of electrical lines (2), which have one or more line fibres (21), arranged within an outer sheathing (22), and cavities (23) between the individual line fibres (21) as well as between the individual line fibres (21) and the outer sheathing (22), characterized in that the one end (2a) to be sealed of the line (2) is immersed in a liquid sealing compound (3) and the other end (2b) of the line (2) is subjected to negative pressure.
  2. Sealing method, in particular according to Claim 1, characterized in that the supply reservoir (4) of the liquid sealing compound (3) into which the one end (2a) of the line (2) is immersed is subjected to positive pressure.
  3. Sealing method according to Claim 1 or 2, characterized in that the sealing compound (3) sucked into the line (2) is subsequently subjected to a post-treatment, in particular a thermal treatment.
  4. Sealing method according to one of the preceding claims, characterized in that the negative pressure is monitored during the sucking in of the sealing compound (3).
  5. Apparatus (1) for the longitudinal sealing of electrical lines (2), in particular for carrying out the sealing method according to one of the preceding claims, characterized by a supply reservoir (4) for the liquid sealing compound (3), into which the one end (2a) to be sealed of the line (2) is immersed, and by a negative-pressure source (5), to which the other end (2b) of the line (2) is connected.
  6. Sealing apparatus according to Claim 5, characterized in that the negative-pressure source (5) has an adapter (6), to which the lines (2) to be sealed can be connected.
  7. Sealing apparatus, in particular according to Claim 5 or 6, characterized in that the sealing-compound supply reservoir (4) is closed off in a pressure-tight manner and a positive-pressure source (11) to which the sealing-compound supply reservoir (4) can be connected is provided.
  8. Sealing apparatus according to one of Claims 5 to 7, characterized in that a pressure sensor (7) which senses the negative pressure of the negative-pressure source (5) is provided.
EP07787317A 2006-09-08 2007-07-10 Apparatus and method for longitudinal sealing of electrical lines Active EP2064711B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006042369A DE102006042369A1 (en) 2006-09-08 2006-09-08 Device and method for the longitudinal sealing of electrical lines
PCT/EP2007/057042 WO2008028707A1 (en) 2006-09-08 2007-07-10 Apparatus and method for longitudinal sealing of electrical lines

Publications (2)

Publication Number Publication Date
EP2064711A1 EP2064711A1 (en) 2009-06-03
EP2064711B1 true EP2064711B1 (en) 2010-11-10

Family

ID=38669441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07787317A Active EP2064711B1 (en) 2006-09-08 2007-07-10 Apparatus and method for longitudinal sealing of electrical lines

Country Status (6)

Country Link
US (1) US8039743B2 (en)
EP (1) EP2064711B1 (en)
CN (1) CN101512683A (en)
AT (1) ATE488014T1 (en)
DE (2) DE102006042369A1 (en)
WO (1) WO2008028707A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105070373B (en) * 2015-08-19 2017-04-12 周玉龙 Waterproof wire and production technology therefor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683104A (en) * 1971-01-07 1972-08-08 Dow Chemical Co Heat resistant cable
US3775548A (en) * 1972-02-24 1973-11-27 Essex International Inc Filled telephone cable
US3823255A (en) * 1972-04-20 1974-07-09 Cyprus Mines Corp Flame and radiation resistant cable
US4095404A (en) * 1975-10-09 1978-06-20 Hitco Method of manufacturing a high-strength, polyurethane-impregnated polyamide cable
US4631229A (en) * 1983-06-06 1986-12-23 Minnesota Mining And Manufacturing Company Article having a coating prepared from radiation curable poly(vinyl chloride) resin composition
US4703132A (en) * 1986-05-16 1987-10-27 Pirelli Cable Corporation Filling compound for multi-wire conductor of an electrical cable and cables including such compound
US5010209A (en) * 1988-12-20 1991-04-23 Pirelli Cable Corp. Power cable with water swellable agents and elongated metal elements outside cable insulation
JPH0684416A (en) 1992-09-03 1994-03-25 Sumitomo Wiring Syst Ltd Manufacture of waterproof cable
US6184473B1 (en) * 1999-01-11 2001-02-06 Southwire Company Electrical cable having a self-sealing agent and method for preventing water from contacting the conductor
DE10345676A1 (en) * 2003-10-01 2005-04-21 Volkswagen Ag Device for longitudinal water sealing of especially electrical lines has tool stamp for connecting terminating or connection element to line, injection needle for penetrating into envelope, feed sealant into cavities when moved towards rest

Also Published As

Publication number Publication date
ATE488014T1 (en) 2010-11-15
DE102006042369A1 (en) 2008-03-27
EP2064711A1 (en) 2009-06-03
DE502007005629D1 (en) 2010-12-23
US8039743B2 (en) 2011-10-18
CN101512683A (en) 2009-08-19
US20090183896A1 (en) 2009-07-23
WO2008028707A1 (en) 2008-03-13

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